US10431346B2 - Radiation shielding liquid filter, and X-ray imaging device provided with same - Google Patents

Radiation shielding liquid filter, and X-ray imaging device provided with same Download PDF

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US10431346B2
US10431346B2 US15/544,291 US201515544291A US10431346B2 US 10431346 B2 US10431346 B2 US 10431346B2 US 201515544291 A US201515544291 A US 201515544291A US 10431346 B2 US10431346 B2 US 10431346B2
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ray imaging
imaging device
liquid filter
radiation
radiation shielding
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US20170372809A1 (en
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Jae Sang Ham
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    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21K—HANDLING OF PARTICLES OR IONISING RADIATION NOT OTHERWISE PROVIDED FOR; IRRADIATION DEVICES; GAMMA RAY OR X-RAY MICROSCOPES
    • G21K1/00—Arrangements for handling particles or ionising radiation, e.g. focusing or moderating
    • G21K1/10—Scattering devices; Absorbing devices; Ionising radiation filters
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A61B6/10—Safety means specially adapted therefor
    • A61B6/107—Protection against radiation, e.g. shielding
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A61B6/10—Safety means specially adapted therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A61B6/40—Arrangements for generating radiation specially adapted for radiation diagnosis
    • A61B6/4035—Arrangements for generating radiation specially adapted for radiation diagnosis the source being combined with a filter or grating
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/05—Splash shields for protection of the surgeon, e.g. splash guards connected to the apparatus
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
    • G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
    • G01N23/04—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21K—HANDLING OF PARTICLES OR IONISING RADIATION NOT OTHERWISE PROVIDED FOR; IRRADIATION DEVICES; GAMMA RAY OR X-RAY MICROSCOPES
    • G21K5/00—Irradiation devices
    • G21K5/04—Irradiation devices with beam-forming means
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N5/00—Radiation therapy
    • A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
    • A61N2005/1092—Details
    • A61N2005/1095—Elements inserted into the radiation path within the system, e.g. filters or wedges

Definitions

  • the present invention relates generally to a radiation shielding liquid filter. More particularly, the present invention relates to a radiation shielding liquid filter and an X-ray imaging device provided with same, wherein the liquid filter is capable of providing a simple structure, weight reduction, and various mounting locations.
  • a stationary X-ray imaging device is used in an X-ray room in a hospital, and a mobile X-ray imaging device is used in an operating room.
  • the mobile X-ray imaging device is called C-arm because of its shape.
  • the C-arm is a device that captures X-ray images, performs image processing in a computer, and displays a video image in real time on a monitor when a physician in the operating room aligns bones or implants screws or pins while operating on patients with bone fractures, patients with disc problems, or patients with spine related problems, or when the physician examines the bone structure at various angles or visually checks whether the bone is in the correct position when performing manual repositioning (adjusting the bones without surgery) of the fracture.
  • the X-ray imaging device is an essential device especially for orthopedic operations and neurosurgical operations.
  • the C-arm requires a smaller radiation dose than the stationary X-ray imaging device, but while the C-arm is operated (i.e., while the operator's foot is on the foot switch, about 30 seconds to 1 minute depending on the operator of the X-ray imaging device) during operation, the operator (hereinafter, ‘operator’ refers to a doctor, a nurse, a surgeon, an operation assistant, an X-ray imaging device operator, etc.) is constantly exposed to radiation. Accordingly, after a major surgical operation that takes several hours, the radiation dose is increased because the operator is exposed to radiation for a long time. As a result, extreme fatigue is caused after surgery, and long-term repeated exposure to radiation causes damage to the human body including cancer, leukemia, etc.
  • Korean Patent No. 1145143 entitled “Radiation shield apparatus for X-ray photographing device”
  • Korean Patent No. 1225241 entitled “Radiation shield apparatus for X-ray photographing device”
  • the present applicant has commercialized patented products currently on the market.
  • the above-patented products have a radiation shielding effect, but they are heavy and the mounting location of the shield apparatus cannot be changed.
  • actual users have demanded a more compact and more lightweight radiation shielding unit that is capable of being mounted in various locations while providing a radiation shielding effect, so the present applicant has developed the present invention while continuing research and development in order to comply with such practical requests.
  • an object of the present invention is to provide a radiation shielding liquid filter and an X-ray imaging device provided with same, wherein the liquid filter is capable of providing a simpler structure, weight reduction, and various mounting locations as well as providing a radiation shielding effect for protecting an operator from exposure to radiation emitted during X-ray imaging from a C-arm, which is a mobile X-ray imaging device, and a stationary X-ray imaging device that are used in the hospital for X-ray imaging.
  • the present invention provides a radiation shielding liquid filter having a function of shielding radiation emitted from an X-ray imaging device toward an operator to protect the operator from exposure to the radiation
  • the liquid filter including: a casing filled with a liquid material, the liquid material having a composition of: 10 to 30 parts by weight of silver (Ag) in powder form; 25 to 40 parts by weight of a polymeric dispersant; 45 to 50 parts by weight of water; and 1 to 5 parts by weight of at least one element selected from copper (Cu), aluminum (Al), and mercury (Hg).
  • a radiation shielding unit of the present invention has a function of shielding radiation emitted toward an operator to protect the operator from exposure to radiation emitted from the X-ray imaging device, wherein the radiation shielding unit includes: an attachment member having a hole formed through a central portion of the attachment member in a vertical direction, and a step formed along a circumference of the hole, the attachment member being provided on a distal end of a tube that is an X-ray generation part of the X-ray imaging device; a liquid filter seated on the step of the attachment member; and a filter holding member having a hole formed through a central portion of the filter holding member in the vertical direction, and screw-coupled to the attachment member, the filter holding member holding the liquid filter seated in the attachment member.
  • An X-ray imaging device of the present invention has a function of shielding radiation emitted toward an operator to protect the operator from exposure to radiation emitted from the X-ray imaging device, wherein the X-ray imaging device is provided with: a liquid filter including a casing filled with a liquid material, the liquid material having a composition of: 10 to 30 parts by weight of silver (Ag) in powder form; 25 to 40 parts by weight of a polymeric dispersant; 45 to 50 parts by weight of water; and 1 to 5 parts by weight of at least one element selected from copper (Cu), aluminum (Al), and mercury (Hg), wherein the liquid filter is provided between an X-ray generator provided in the X-ray imaging device and a tube emitting X-rays generated by the X-ray generator to a patient.
  • a liquid filter including a casing filled with a liquid material, the liquid material having a composition of: 10 to 30 parts by weight of silver (Ag) in powder form; 25 to 40 parts by weight of a polymeric dis
  • the radiation shielding liquid filter according to the present invention having the above-described features is formed by filling a casing with a liquid shielding material, it is possible to achieve a very compact and simple structure, and weight reduction.
  • the casing filled with the liquid shielding material can be mounted on an end portion of a tube from which radiation is emitted, it may be efficiently mounted on an existing X-ray imaging device, and further, it may be also mounted at an appropriate position between a tube and an X-ray generator of a new X-ray imaging device when manufacturing the X-ray imaging device.
  • the radiation dose from a CT scan is about 7 mSV per scan
  • the radiation dose from a C-arm is about 3.5 mSV per scan.
  • FIG. 1 is a view showing a C-arm provided with a radiation shielding unit of the present invention.
  • FIG. 2 is a view showing a state in which the radiation shielding unit is assembled.
  • FIG. 3 is a view showing a state in which the radiation shielding unit is disassembled.
  • the most significant technical feature of a radiation shielding liquid filter and an X-ray imaging device provided with the same according to the present invention is that the filter can be formed in a liquid phase, so that it is possible to reduce weight of the filter and to produce the filter by changing the shape and size thereof according to the demand of a user, and the mounting location of the liquid filter can be varied, so that the liquid filter may be efficiently mounted on a tube of an existing X-ray imaging device, and may be mounted in a new X-ray imaging device when manufacturing the X-ray imaging device.
  • a C-arm that is a mobile X-ray imaging device includes: a tube 11 that is an X-ray generation part; a detector 13 receiving a captured X-ray image, the tube and the detector being provided at opposite ends of a C-arm frame, respectively; a shaft provided at a middle portion of the frame and serving as a rotary axis of the frame; a control unit having a castor attached to a lower portion of the control unit; and a monitor 15 receiving data from the control unit and displaying the received data as a video image in real time.
  • a radiation shielding unit 20 is mounted on the tube 11 emitting X-rays generated by an X-ray generator of a stationary X-ray imaging device and a mobile X-ray imaging device to a patient, the radiation shielding unit including: an attachment member 23 coupled to the tube 11 ; a filter holding member 25 screw-coupled to the attachment member 23 ; and a liquid filter 21 provided between the attachment member and the filter holding member.
  • the attachment member 23 may be screw-coupled to a distal end of the tube 11 , or holes may be formed at locations where the attachment member and the filter holding member face each other such that the radiation shielding unit 20 and the X-ray imaging device are combined using a binding member such as an iron band, an iron cord, etc.
  • the method of mounting the radiation shielding unit is not particularly limited.
  • Both the attachment member 23 and the filter holding member 25 function to protect an operator by shielding radiation scattered toward the operator, so they are made of a material capable of shielding the scattered radiation. Since a material composed of only lead is too heavy, a material including at least one element selected from lead (Pb), aluminum (Al), silicon (Si), titanium (Ti), chromium (Cr), manganese (Mn), iron (Fe), cobalt (Co), nickel (Ni), copper (CU), zinc (Zn), molybdenum (Mo), rhodium (Rh), silver (Ag), tin (Sn), tungsten (W), platinum (Pt), and gold (AU) is used.
  • lead (Pb) aluminum (Al), silicon (Si), titanium (Ti), chromium (Cr), manganese (Mn), iron (Fe), cobalt (Co), nickel (Ni), copper (CU), zinc (Zn), molybdenum (Mo), rhodium (Rh), silver (
  • the most dangerous thing to the operator during X-ray imaging is that radiation emitted from the X-ray imaging device directly penetrates the operator, or radiation emitted from the tube 11 penetrates a patient and then is reflected to the operator.
  • the liquid filter 21 significantly reduces the amount of radiation reflected to the operator after penetrating the patient.
  • one of the important properties required for the liquid filter 21 is to prevent an X-ray image of the patient from being blurred.
  • the liquid filter 21 includes a casing filled with a liquid material, the liquid material having a composition of 10 to 30 parts by weight of silver (Ag) in particulate powder form, 25 to 40 parts by weight of a polymeric dispersant, 45 to 50 parts by weight of water, and 1 to 5 parts by weight of at least one element selected from copper (Cu), aluminum (Al), and mercury (Hg).
  • the dispersant functions to uniformly spread the metal element including silver (Ag) in particulate powder form so as not to be spread to a certain part of the casing.
  • the dispersant uses a polyoxyethylene sorbitan monooleate.
  • the radiation shielding unit 20 includes the attachment member 23 , the filter holding member 25 , and the liquid filter 21 placed between the attachment member and the filter holding member.
  • the attachment member 23 is provided with a hole formed through a central portion of the attachment member in a vertical direction, and a step 231 formed along a circumference of the hole, such that the attachment member is mounted on the distal end of tube 11 , which is the X-ray generation part of the X-ray imaging device.
  • the liquid filter 21 is filled in a casing made of a material such as plastic, and is seated on the step 231 formed on an inner surface of the attachment member 23 .
  • the filter holding member 25 is provided with a hole formed through a central portion of the filter holding member in the vertical direction and is screwed into a spiral groove formed on an inner circumferential surface of the attachment member 23 such that the attachment member 23 , the liquid filter 21 , and the filter holding member 23 are integrally assembled.
  • the radiation shielding unit 20 has a very compact and simple structure, and has very light weight because the three components are assembled together.
  • the radiation shielding unit 20 provided with the liquid filter 21 is not only mounted on the distal end of the tube 11 but also can be mounted in various locations.
  • the liquid filter 21 itself may be provided integrally within the X-ray imaging device. When the liquid filter is installed in the X-ray imaging device, only the liquid filter 21 is mounted therein. In this case, the liquid filter 21 may be mounted at a position between the X-ray generator and the tube emitting X-rays generated by the X-ray generator to the patient.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Medical Informatics (AREA)
  • Physics & Mathematics (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Surgery (AREA)
  • Pathology (AREA)
  • General Health & Medical Sciences (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Public Health (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Molecular Biology (AREA)
  • Veterinary Medicine (AREA)
  • Animal Behavior & Ethology (AREA)
  • Optics & Photonics (AREA)
  • Biophysics (AREA)
  • Radiology & Medical Imaging (AREA)
  • General Engineering & Computer Science (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
US15/544,291 2015-01-19 2015-02-11 Radiation shielding liquid filter, and X-ray imaging device provided with same Active 2035-08-28 US10431346B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
KR1020150008614A KR101638364B1 (ko) 2015-01-19 2015-01-19 방사선 차폐 액상필터 및 이를 장착한 엑스레이 촬영장치
KR10-2015-0008614 2015-01-19
PCT/KR2015/001375 WO2016117748A1 (ko) 2015-01-19 2015-02-11 방사선 차폐 액상필터 및 이를 장착한 엑스레이 촬영장치

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US20170372809A1 US20170372809A1 (en) 2017-12-28
US10431346B2 true US10431346B2 (en) 2019-10-01

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US (1) US10431346B2 (de)
EP (1) EP3248545B1 (de)
JP (1) JP6548196B2 (de)
KR (1) KR101638364B1 (de)
CN (1) CN107205714B (de)
TR (1) TR201907181T4 (de)
WO (1) WO2016117748A1 (de)

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KR102060403B1 (ko) 2017-08-10 2020-02-11 김기경 방사선 차폐 필터 및, 이를 포함하는 방사선 영상 촬영장치용 필터 어셈블리
KR102183330B1 (ko) * 2018-11-12 2020-11-26 (주)엠에스라인이엔지 방사선 차폐 필터가 구비된 엑스레이 촬영장치용 조리개 장치 및 이를 장착한 엑스레이 촬영장치
KR102236042B1 (ko) * 2018-12-31 2021-04-05 (주)엠에스라인이엔지 방사선 차폐 액상필터 및 이를 장착한 엑스레이 촬영장치
KR102076712B1 (ko) * 2019-06-19 2020-02-12 (주)엠에스라인이엔지 엑스레이 촬영장치용 레이저 에이머 장치 및 이를 장착한 엑스레이 촬영장치
EP3993705B1 (de) * 2019-07-02 2024-07-24 Radiaction Ltd. Entfaltbare strahlenschutzabdeckung
KR102327861B1 (ko) * 2019-12-17 2021-11-17 사회복지법인 삼성생명공익재단 액체형 차폐재를 이용하는 방사선 차폐 장치
KR102387138B1 (ko) * 2020-02-13 2022-04-15 (주)엠에스라인이엔지 조리개를 구비한 엑스레이 촬영장치
EP4214723A4 (de) 2020-09-18 2024-02-21 Ultra Safe Nuclear Corporation Strahlungsabschirmung für kompakte und transportierbare kernkraftsysteme
KR102593937B1 (ko) 2021-08-23 2023-10-25 (주)에이트마진 방사선 저감 필터의 제조 방법
KR20240057897A (ko) 2022-10-25 2024-05-03 (주)에이트마진 패각을 이용한 방사선 차폐체 제조 방법

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WO2016117748A1 (ko) 2016-07-28
JP2018503839A (ja) 2018-02-08
CN107205714B (zh) 2020-05-12
TR201907181T4 (tr) 2019-06-21
EP3248545A1 (de) 2017-11-29
KR101638364B1 (ko) 2016-07-11
EP3248545A4 (de) 2018-08-29
JP6548196B2 (ja) 2019-07-24
US20170372809A1 (en) 2017-12-28
EP3248545B1 (de) 2019-05-08
CN107205714A (zh) 2017-09-26

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